1884 Theodore Burr Arch Truss Cutaway • HAER No. PA-586
Pine Grove Bridge — Burr Arch Truss Cutaway Tee
Restored from Sheet 2 of the National Covered Bridges Recording Project (HAER PA-586 / VT-28, National Park Service). Presents the isometric structural cutaway of master bridgewright Elias McMellen’s 1884 Pine Grove Bridge spanning Octoraro Creek on the Lancaster–Chester County line in Pennsylvania — illustrating Theodore Burr’s 1817 patented combination of a multiple-kingpost timber truss stiffened by sweeping laminated timber arches.
Relaxed boxy fit. 100% ring-spun US cotton (6.1 oz) with a topstitched classic-width rib collar and twill-taped neck and shoulders. Garment-dyed for virtually zero shrinkage.
| Size | Chest Width | Body Length |
|---|---|---|
| S | 18.25" | 26.6" |
| M | 20.25" | 28" |
| L | 22" | 29.4" |
| XL | 24" | 30.75" |
| 2XL (+$2.00) | 26" | 31.6" |
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